Cable-grip-adjusting device



N0 Model.)

H. H. LYNCH.

CABLE GRIP ADJUSTING DEVICE.

No. 468,064. Patented Feb. 2, 1892.

UNITED STATES PATENT OFFICE.

HENRY II. LYN OII, OF SAN FRANCISCO, CALIFORNIA.

CABLE-G RI P-ADJ U STING DEVICE.

SPECIFICATION forming part Of Letters Patent N0. 468,064, dated February2, 1892.

Application filed August 19, 1891. Serial No. 103,122. (No model.)

To (LZZ whom it may concern:

Be it known that I, HENRY IL LYNCH, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented an Improvement in Cable-Grip-Adjusting Devices; and Ihereby declare the following to be a full, clear, and exact descriptionof the same.

My invention relates to a device for adj usting cable-grips; and itconsists of a takeup mechanism applied to the griplever and itsconnection with the stationary frame, whereby the wear of thegripping-dies may be compensated and the are over which the lever ismoved to open and close the grip remain substantially the same at alltimes.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a side elevation showing the application ofmy invent-ion. Fig. 2 is aperspective view of the cross-head and theoperating-screw.

A is the frame, which is bolted to supporting-timbers upon the car andwhich carries a part of the grip-actuating mechanism at the lower end.

B is a flat plate sliding between the sides of the frame A,which servesas guides therefor, the lower end of this plate acting in conjunctionwith the stationary portions of the frame to open and close thegripping-jaws so as to release or grip the cable. The gripping-jaws maybe of any of the usual or known forms, and are not here shown.

C is the quadrant, which has its lower end bolted to the top of theplate B.

D is a lever, the lower end of which is secured in the socket D, thelatter being fulcrumed to the lower part of the quadrant C, as shown atE.

F are links, the lower ends of which are fulcrumed to a pin or bolt inthe top crossbar of the frame A, there being one of these links uponeach side, and they extend up on each side of the lower part of thequadrant C, and are connected with the sliding block or cross-head G.This cross-head is adapted to travel in the slot II, which is made inthe socket-piece D, and by moving this crosshead up or down, the leverand the quadrant upon which it is carried will be correspondingly movedto or from the stationary supporting-frame A.

It will be manifest that this movement, carrying with it, as it does,the plate B, will move this plate with reference to the lower part ofthe frame A, and will thus adjust the relative position of the partswhich actuate the gripping-dies. In order to make these adjustments,ithas hitherto been customary to employ a screw, which is situatedbeneath the floor of the car, and the gripman is obliged to get down tothis point with a wrench to make the adjustments.

In my invention the cross-head G has a hole made through it and ascrew-thread cut therein within which the screw I is fitted to turn. Thelowerend of this screw is stepped in the lower part of the guide-openingII, in which the cross-head G travels. The head I at the upper end ofthis screw abuts against the upper part of the opening II and has asquare socket J made in the end of it.

K is a rod, the lower end of which is made correspondingly square to fitinto this socket. This rod extends up alongside the handle D, and itsupper end is-stepped in a lug or bar L, which is secured to the handle Dnear the upper end.

K is an enlarged head having radial holes made through it, as shown, andby means of a short pin fitting these holes the rod K maybe turnedaround, turning with it the screw I, and thus advancing the cross-head Gin either direction upon the screw. By this construction it is renderedeasy for the gripman to adjust the parts to the constant wear of thegripping-dies and without stopping or taking his attention off" hisbusiness.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In a cable-gripping apparatus, the main stationary frame, the quadrantand quadrant-plate adapted to slide upon said frame and actuate thegripping-jaws at the lower end, a lever fulcrumed upon the quadrant andmovable about its fulcrum, a cross-l1ead slidingin a slotted guide uponthe lower end of the lever, links connecting the cross-head with thestationary frame, a screw extending longitudinally from end to end ofthe slot and passing through the cross-head and having rant andconnected parts are correspondingly its upper end formed with a squaresocket, a moved with relation to the fixed portion of rod having thelower end made square and the grip-frame, substantially as hereindeadapted to engage the square socket in the scribed. 15 5 upper end ofthe screw, said rod extending In Witness whereof I have hereunto set myto the upper end of the grip-lever and having hand. a journal-box orstep in which it turns, and a head with means whereby the rod may beturned and motion communicated from it to Witnesses: [O the screw,whereby the cross-head is moved S. H. NOURSE,

up or down upon the screw and the quad- J. A. BAYLESS.

HENRY H. LYNCH.

